. Industrial history of the United States, from the earliest settlements to the present time: being a complete survey of American industries, embracing agriculture and horticulture; including the cultivation of cotton, tobacco, wheat; the raising of horses, neat-cattle, etc.; all the important manufactures, shipping and fisheries, railroads, mines and mining, and oil; also a history of the coal-miners and the Molly Maguires; banks, insurance, and commerce; trade-unions, strikes, and eight-hour movement; together with a description of Canadian industries . rtising machines, those for turning th
. Industrial history of the United States, from the earliest settlements to the present time: being a complete survey of American industries, embracing agriculture and horticulture; including the cultivation of cotton, tobacco, wheat; the raising of horses, neat-cattle, etc.; all the important manufactures, shipping and fisheries, railroads, mines and mining, and oil; also a history of the coal-miners and the Molly Maguires; banks, insurance, and commerce; trade-unions, strikes, and eight-hour movement; together with a description of Canadian industries . rtising machines, those for turning the rims of pulleys, forcutting the teeth of wheels, for paring and bevelling the edges of boiler-plates, for planing the edges of locomotiveframes, for bending carriage-springs, forcutting the threads of screws and bolts,&c. The system prevalent in the bestAmerican shops leads to the multiplica-tion of this class of machines year byyear. Invention is encouraged; and the workman is given a part of thebenefit of his invention, if he will suggest a machine which will save manuallabor, and facilitate the operations of the shop. Still another class of machines is remarkable chiefly for accuracy of operation: these are the ones used in all fine machine-work. Machinery 1 for making Before the general application of machinery to iron-working,minute inaccuracies of a hundredth part of an inch might be detected things. 1 ° by a very experienced workman, but no smaller defects than machine-work was almost impossible, because mechanism which was. OF THE UNITED STATES. 269 below a certain size was sure to be full of inaccuracies, and work badly. Allmachinery was clumsy. American ingenuity first insured absolute accuracy bythe general use of machinery in the making of the small parts of complicatedmechanism, and thus made fine and delicate mechanism possible by supplyingthe means to detect and measure differences of a ten-thousandth of an inch. The steam-riveting machineis one of t
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Keywords: ., bo, bookcentury1800, bookdecade1870, bookidindustrialhistor00boll
